Star-shaped winding framework and motor protection structure
By designing the star winding skeleton and the outer protective structure, the problem of poor insulation during the motor winding process is solved, the insulation performance is enhanced and the motor failure risk and cost are reduced.
Patent Information
- Application Number
- CN202422352120.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-26
AI Technical Summary
During the winding process of existing motors, the insulation performance of the coil, the shell and the iron core is insufficient, resulting in poor insulation.
Design a star-shaped winding skeleton, including providing over-line protrusions, binding holes, skirts and winding teeth on the body of the through-line skeleton, and covering the protective structure on the outside to enhance insulation performance.
Through the staggered distribution of overwired protrusions and winding teeth, the insulation performance between the winding and the core is increased, mold cost and motor failure risk is reduced. At the same time, the outer protective structure enhances the creepage distance between the winding and the shell, reducing costs.
Smart Images
Figure CN223156817U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motors, and particularly relates to a star-shaped winding skeleton and a motor protection structure. Background Technique
[0002] In the application field of the motor industry, the function of the wire-passing skeleton is to fix and hold the motor coil and prevent direct contact with the iron core. Therefore, the wire-passing skeleton plays an indispensable role in motor winding and insulation. However, for a compressor motor, wire damage is likely to occur during the winding process. When the motor is placed in the housing, due to the lack of protection for the outer cross-wired coils, poor insulation is likely to occur. Therefore, the design of the insulation skeleton structure needs to be further improved. Content of the Utility Model
[0003] Aiming at the above-mentioned existing technical deficiencies, the technical problem to be solved by the utility model is to provide a star-shaped winding skeleton and a motor protection structure, aiming to enhance the insulation performance between the coil and the housing and the iron core.
[0004] To solve the above technical problem, the utility model adopts the following technical scheme: The utility model provides a star-shaped winding skeleton, including: a wire-passing skeleton body installed on the outgoing side of the stator iron core; the wire-passing skeleton body includes a plurality of wire-passing protrusions arranged on the end face of the wire-passing skeleton body that does not contact the stator iron core, binding holes arranged on the side face of the wire-passing skeleton body, and a skirt arranged on the end face of the wire-passing skeleton body that contacts the stator iron core.
[0005] Further, the plurality of wire-passing protrusions are staggered in the axial direction of the wire-passing skeleton body.
[0006] Further, the binding holes open to the end face of the wire-passing skeleton body that contacts the stator iron core.
[0007] Further, a plurality of winding teeth are also arranged at intervals on the end face of the wire-passing skeleton body that does not contact the stator iron core; inlet and outlet wire grooves are formed on the corresponding side walls of each winding tooth.
[0008] Further, the depth of the inlet and outlet wire grooves covers below the wire-passing protrusions.
[0009] Further, for the skirt arranged on the end face of the wire-passing skeleton body that contacts the stator iron core, the wall thickness is not less than 0.6 mm.
[0010] A motor protection structure includes: a protection structure covering the outside of the wire-passing skeleton body; the protection structure includes a protective cover and a terminal sheath covering the outside of the wire-passing skeleton body; wherein, the terminal sheath is placed on the upper end face of the protective cover and forms an integral structure.
[0011] Further, mounting holes are provided on the protective cover, which cooperate with the wire passing skeleton body for circumferential and axial positioning.
[0012] Further, at least two phase wire outlet holes are provided on the end face of the protective cover.
[0013] Further, a plurality of terminal sheath holes are provided on the terminal sheath, and the terminal sheath holes face the phase wire outlet holes.
[0014] The beneficial effects of the present utility model are as follows:
[0015] 1. By providing wire passing bosses on the end face of the wire passing skeleton body, which are staggered axially, a wire routing gap is reserved, avoiding poor inter-turn insulation. The binding holes are made into an open shape and the draft angle is increased, reducing the number of sliders and lowering the mold cost. A skirt is provided at the end of the wire passing skeleton body, which can effectively enhance the insulation performance between the winding and the iron core.
[0016] 2. Through the protective structure wrapped outside the wire passing skeleton body, the enameled wire can be effectively protected, increasing the creepage distance between the winding and the housing. At the same time, it is integrally formed with the wiring terminal sheath, reducing the cost. The structure of the terminal sheath prevents interference problems during the normal installation of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.
[0018] Figure 1 It is an exploded view of the structure of a star winding skeleton and a motor protection structure provided by an embodiment of the present utility model.
[0019] Figure 2 It is a side view of the wire passing skeleton body.
[0020] Figure 3 It is a wire routing diagram of the wire passing skeleton body.
[0021] Figure 4 It is a three-dimensional structure diagram of the protection structure;
[0022] Description of the reference numerals: 1. Stator core; 2. Over-wire skeleton body; 21. Over-wire opening; 22. Over-wire protrusion; 23. Wiring gap; 24. Inlet and outlet wire groove; 25. Binding hole; 26. Skirt; 27. Bottom fixed shaft; 28. Hook; 29. Coil wiring; 3. Protection structure; 31. Protective cover; 32. Terminal sheath; 321. Sheath hole end; 33. Phase wire outlet hole; 34. Mounting hole. Detailed implementation manners
[0023] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.
[0024] Referring to Figures 1 to 3 , this embodiment provides a star winding skeleton, including: an over-wire skeleton body 2, on the end face of the over-wire skeleton body 2, a plurality of over-wire openings 21 and over-wire protrusions 22 are provided, there is a wiring gap 23 between two adjacent over-wire protrusions 22, on the side face of the over-wire skeleton body 2, a binding hole 25 is provided, the over-wire protrusions 22 are used to wind and block the coil to prevent the copper wire from slipping. Viewed axially, the positions of the over-wire protrusions 22 are staggered. In addition, the opening of the binding hole 25 to the end face where the over-wire skeleton body 2 contacts the stator core 1 can reduce the sliders required during mold opening, reducing the mold opening cost. On the end face of the over-wire skeleton body 2 that does not contact the stator core 1, a plurality of winding teeth are also arranged at intervals; on the corresponding side walls of each winding tooth, an inlet and outlet wire groove 24 is opened, and the depth of the inlet and outlet wire groove 24 can cover below the over-wire protrusion 22, so as to ensure the separate wiring of each phase wire and prevent the occurrence of wire entanglement and turn-to-turn defects. At each wire-passing position of the over-wire skeleton body 2, a larger R angle is designed to make the surface smooth and avoid scratching the enameled wire by the sharp edges of the wire groove. On the end face of the over-wire skeleton body 2 that contacts the stator core 1, a skirt 26 is provided. The skirt 26 can be integrally formed on the over-wire skeleton body 2 at one time, or can be made into a single skirt 26. During installation, it is glued or screwed to the over-wire skeleton body 2, or can be passed through the end face by the bottom fixed shaft 27. The advantage of this skirt 26 is that when the three-phase wires of U phase, V phase, and W phase are axially arranged in sequence on the outer wall of the over-wire skeleton body 2 to form a coil wiring 29, the creepage distance between the coil and the iron core is increased, reducing the risk of motor failure.
[0025] Referring to Figure 1 and Figure 4, this embodiment provides a motor protection structure, a protection structure 3 wrapped around the outer side of the wire passing skeleton body. The protection structure 3 includes a protective cover 31 wrapped around the outer side of the wire passing skeleton body 2 and a terminal sheath 32. The terminal sheath 32 is placed on the upper end face of the protective cover 31 to form an integral structure. An installation hole 34 is provided on the protective cover 31, which is matched with the hook 28 of the skeleton body for circumferential and axial positioning. In other embodiments of the utility model, protrusions can also be provided on the protective cover 31 to cooperate with the wire passing skeleton body 2. As long as it is other deformation forms under the concept of the present utility model, they are all within the protection scope of the present utility model. The terminal sheath 32 has a structure similar to an "eight" shape to prevent interference when being installed correctly with the motor rotor assembly. In addition, a phase wire outlet hole 33 is provided at the end face of the protective cover and at the hole end 321 of the terminal sheath, so that it is easier to assemble the phase wire and the terminal sheath. Through the protection structure 3 wrapped around the outer side of the wire passing skeleton body 2, the creepage distance between the winding and the housing can be effectively increased, and at the same time, it is formed into an integral structure with the sheath, reducing the cost.
[0026] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A star-shaped winding skeleton, characterized in that, Comprising: A wire-passing skeleton body installed on the outgoing line side of the stator core; the wire-passing skeleton body includes a plurality of wire-passing protrusions arranged on the end face of the wire-passing skeleton body that is not in contact with the stator core, a binding hole arranged on the side face of the wire-passing skeleton body, and a skirt arranged on the end face of the wire-passing skeleton body that is in contact with the stator core.
2. The star-shaped winding skeleton according to claim 1, characterized in that, The plurality of wire-passing protrusions are staggeredly distributed in the axial direction of the wire-passing skeleton body.
3. The star-shaped winding skeleton according to claim 1, characterized in that, The binding hole opens to the end face of the wire-passing skeleton body that is in contact with the stator core.
4. A star-shaped winding skeleton according to claim 1, characterized in that, On the end face of the wire-passing skeleton body that is not in contact with the stator core, a plurality of winding teeth are also arranged at intervals; wire inlet and outlet grooves are formed on the corresponding side walls of each winding tooth.
5. The star-shaped winding skeleton according to claim 4, characterized in that The depth of the wire inlet and outlet grooves covers below the wire-passing protrusions.
6. The star-shaped winding skeleton according to claim 1, wherein For the skirt arranged on the end face of the wire-passing skeleton body that is in contact with the stator core, the wall thickness is not less than 0.6 mm.
7. An electric motor protection structure based on a star winding skeleton as described in claim 1, characterized in that, Comprising: A protection structure wrapped on the outer side of the wire-passing skeleton body; the protection structure includes a protective cover and a terminal sheath wrapped on the outer side of the wire-passing skeleton body; wherein, the terminal sheath is placed on the upper end face of the protective cover to form an integral structure.
8. A motor protection structure according to claim 7, characterized in that, The protective cover is provided with mounting holes, which are used for circumferential and axial positioning in cooperation with the wire-passing skeleton body.
9. The motor protection structure according to claim 7, wherein, At least two phase wire outgoing holes are arranged on the end face of the protective cover.
10. A motor protection structure according to claim 9, characterized in that, The terminal sheath is provided with a plurality of terminal sheath hole ends, and the terminal sheath hole ends face the phase wire outgoing holes.